Drum press



March 16, 1943. P. E. HCOLI-IIORST 2,313,996

DRUM PRES-S Filed Sept. 21, 1939 C'. i? E 15 1601? Patented Mar. 16, 1943 UlTED STATES DRUM PRESS Application September 21, 1939, Serial No. 295,991 In the Netherlands September 26, 1938 3 Claims.

invention relates to a drum press comprising two drums which rotate in the same direction and are mounted within and excentrically to each other, the pressing space formed between both drums being divided into compartments by means ofa series of vanes compelled to rotate together with the drums and radially or nearly radially directs with respect to the drums.

Presses of this type are known the vanes of which are slidably supported in the inner drum and are guided into a cam groove at the side wall of the housing by means of journals in such a manner that the ends of the vanes are in contact with the inner surface of the outer drum. As the elidable vanes are supported at one of their ends only they are unfavourably loaded so that with high pressures the guides for the vanes in the inner drum have to take up heavy forces which involves considerable wear and tear.

The invention has for its object to improve said known presses so as to make them adapted for high pressures and to this end the vanes are hinged at their ends to both drums in such a manner that they are continuously supported therein. With said construction the vanes can take up great forces and complete tightness of the compartments will be secured. The press according to my invention is, therefore, particularly adapted for expressing oil containing substances, such as seeds, nuts, palm fruits, and also for pulp and leaves of sugar beet, etc. My novel press may also be used for expressing cellulosic material as well as for compressing plastic and powder-like substances.

lhe drawing illustrates, by way of example only, an embodiment of a press for expressing liquid-containing material. On this drawing:

i 1 is a vertical axial sectional view of a vertical press taken along line I-I of Fig. 2,

2 is a plan view of said press,

Fig. 3 is a cross sectional detail of a modified form of partition, and

Fig. 4 is a cross sectional detail of a further modified form of partition.

The drum 1 is secured to the vertical shaft 2,

which is supported by bearings 3 and driven by the shaft 6 through the intermediary of gears i, 5. A hollow drum 1 is slid over the drum I and supported excentrically to said latter by means of guide-rollers 8. The drum 7 has at its outer circumference one or more toothed rims i l, which engagement with pinions l2 of the driving shaft so that both drums are rotated in the same direction. The guide rollers 8 are supported on a frame 5 which also carries rollers is supporting the drum 1 in vertical direction. Th space left between the drums i and l is divided into compartments by means of vanes I? which at 3a are hinged to the inner drum l and guided at their other ends for swinging movement in bearings I31) arranged in recesses 14 of the outer drum '1.

The material to be pressed is introduced into the space between the drums l, l by the conveying screw it which is surrounded by a tube. The pressing chamber is closed at its upper and -its lower side by covering plates 16 and I! which do not rotate with the drums. The covering plate it has an opening 22 by which the material is introduced into the press and to which the conveying screw 15 is connected. The space between the drums l, l is completely open at the upper and the lower side beyond the pressing zone and used for discharging the expressed mass. The inner surface of the outer drum l and the outer sirface of the inner drum 5 are both lined with perforated plates IS behind which grooves IQ for the discharge of the expressed liquid are provided in the bodies of the drums.

The inner drum 1 is further provided with v channels 26 through which the liquid flows ofi invention.

in order to be collected in a receptacle 2|. At the inner surface of the outer drum 1 the liquid escapes through a circumference recess 23 of the covering plate I 1'.

It is to be noted that my invention is not limited to the embodiment illustrated in the accompanying drawing as various modifications may be effected therein within the scope of the It is thus possible to connect the partitions it which divide the pressing space between the drums into compartments for pivoting movement to the outer drum 1 instead of to the inner drum l and to support them for sliding movement in said latter drum. It will also be possible to make the partitions of two halves which are telescopically joined together and connected at their ends to both drums for pivoting movement.

As shown in Fig. 3 the partitions or vanes which divide the pressing space between the drums into compartments may be connected for pivoting movement to the outer drum 1 at I and be supported for sliding movement in the inner drurn l in bearings i312 arranged in recesses i i-a of said latter drum.

Fig. 4 shows that it is also possible to make the vanes of two halves i3, 53" which are telescopically joined together. Part I3 is connected to the outer drum 1 for pivoting movement at I3b and part I3" is connected totthe inner drum I for pivoting movement at I 3a.

When the press need only be used for rolling or compressing substances the sieve plates l8 are omitted and the nature of the surface of the drum is adapted to that of the material to be pressed as shown in Fig. 4.

What I claim is:

1. A drum press comprising in combination, two rotary drums of different diameters which are mounted within and eccentrically displaced with respect to each other and having a pressing space therebetween, driving means for each of said drums for rotating them in the same direction, substantially radially arranged vanes dividing the pressing space into separate chambers, said vanes having their respective ends continuously supported for swinging movement in both of said drums and being compelled to rotate to gether with the drums.

2. A drum press comprising in combination, two rotary drums of different diameters which are mounted within and eccentrically displaced with respect to each other and having a pressing space therebetween, driving means for each of said drums for rotating them in the same direction, substantially radially arranged vanes positioned in the pressing space for dividing the space into separate chambers, one end of each of said vanes being hinged to one of the drums and the other end being supported in the other drum for swinging and sliding movement and thereby being compelled to rotate together with the drums.

3. A drum press of the character described including in combination a support, a vertical shaft journalled in said support, a horizontally disposed inner drum mounted on said shaft and rotated therewith, an outer drum surrounding said inner drum arranged in spaced relation thereto and eccentrically thereof so as to leave a pressing space between the drums, combined supporting, guiding and rotating means for the outer drum including a vertical shaft, gearing means operatively connecting both of said ver tical shafts to cause said drums to rotate in the same direction, substantially radially arranged vanes dividing the pressing space into separate chambers, said vanes having their respective ends continuously supported for swinging movement in both of said drums and being compelled to rotate with the drums, a material supply inlet adjacent the top of the pressing space, an outlet beneath the pressing space for dischargng the expressed liquid, and another outlet beneath the pressing space for discharging the expressed mass.

CLASINUS P. E. I-IOOLHORST. 

